Abstract: A portable refinery including a refining vessel, a heater for providing heat to the refining vessel, dewatering devices, and a storage tank mounted on a skid which can be quickly and easily transported to a reservoir of petroleum or waste petroleum products to refine the petroleum or waste petroleum into diesel grade fuel at the reservoir.

Abstract: Multiple standardized oil purifiers or refiners are ganged together to provide for suitable contamination removal from oil utilized in an engine or the like. The refiners are mounted on a manifold which functions as a single unit in conjunction with the refiners. The manifold includes an inlet chamber connecting the oil from the engine with the refiners and an outlet chamber connecting the refined oil after passing through the refiners with the engine. Preferably only a single conduit connects each of the inlet and outlet chambers with the engine. The manifold also functions as a supporting device for the refiners.

Abstract: An oil refiner is provided with a fluid containment vessel which is divided into an upper chamber and a lower chamber by a domed plate. The vessel also has a top with a fluid channel therein. The vessel lower chamber contains a filter media preferably enclosed in a cartridge. Oil to be refined is conducted first through the fluid channel in the vessel top, then through the filter media preferably being evenly dispersed into a lower region of the filter media by a radially directing nozzle with a plurality of angularly spaced openings therein. After flowing through the filter media the oil passes through the capillaries in the plate onto a dome shaped evaporation surface thereof. The oil spreads over the evaporation surface in a generally uniform manner even when the vessel is tilted from side to side.